Fig. 1From: SECCA procedure for anal incontinence and antibiotic treatment: a case report of anal abscessTransrectal endoscopic ultrasonography (TRUS). TRUS examination shows external anal sphincter echo structural normal. Internal anal sphincter without interruption of continuity, but of reduced thickness, about 1.3 mm measured at about 9 o’clock and 3 in correspondence of the middle part of the anal canalBack to article page